Ammonium and tertiary amino bis(trimethylsiloxy) siloxanes

ABSTRACT

CATIONIC BIS (TRIMETHYLSIOXY) SIOLOXANES OF THE FORMULA:   MD&#39;&#39;XM   WHEREIN M IS THE TRIMETHYLSIOLOXY UNIT, ME3SIO 1/2, X IS AN INTER OF 1 TO 3, PREFERABLY 1, AND D&#39;&#39; IS A CATIONIC DIFUNTIONAL SILOXY UNIT OF THE FORMULA: X-(R3-N(+)-RO(O)T-SI(-ME)-O) WHEREIN R0 IS A DIVALENT ORGANIC GROUP, T IS 0 OR 1, R IS METHYL OR ETHYL, TAKEN INDIVIDUALLY, AND A FIVE TO SIX MEMBER HETEROCYLIC RING WHEN TWO R GROUPS ARE TAKEN TOGETHER WITH N OF THE ABOVE FORMULA AND X IS AN INORGANIC ANION AND, WHEN TAKEN INDIVDULLY, IS PREFERABLE IODINE, BROMINE, ARYL SULFONATE HAVING 6 TO 18 CARBON ATOMS, BUT CAN BE NITRATE, NITRITE OR BORATE, WHEN TAKEN INDIVIDUALLY, SULFATE, PREFERABLY, OR SULFITE WHEN TWO X GROUPS ARE TAKEN TOGETHER, OR PHOSPHATE WHEN THREE X GROUPS A RE TAKEN TOGETHER. ALSO DISCLOSED ARE TERTIARY AMINO BIS (TRIMETHYLSIOLOXY) SIOLOXANES OF THE FORMULA MDXM WHEREIN M AND X ARE AS DEFINED ABOVE AND D IS A TERTIARY AMINO DIFUNCTIONAL SILOXY UNIT OF THE FORMULA:   R2NR0(O)TSI(ME)O   WHEREIN R, R0 AND T ARE AS DEFINED ABOVE, WHICH ARE USED IN PREPARING THE ABOVE CATIONLIC SIOLOXANES. THE ABOVE CATIONIC SILOXANES ARE USEFUL AS EMULSIFERS, E.G., FOR WATER-POLY (DIMETHYLSIOLOXANE) OIL SYSTEMS, BACTERIOCIDES, ANTISTATIC AGENTS, WETTING AGENTS AND MOLD RELEASE AGENTS.

United States Patent 3,658,867 AMMONIUM AND TERTIARY AMINO BIS(TRI- METHYLSILOXY) SILOXANES Bela Prokai, Mahopac, N.Y., assignor to Union Carbide Corporation, New York, NY. No Drawing. Filed Dec. 22, 1969, Ser. No. 887,428 Int. Cl. C07f 7/02; 00711 87/22, 29/10 U.S. Cl. 260-448.2 N Claims ABSTRACT OF THE DISCLOSURE Cationic bis(trimethylsiloxy) siloxanes of the formula:

MD M

wherein M is the trimethylsiloxy unit, Me SiO x is an integer of 1 to 3, preferably 1, and D is a cationic difunctional siloxy unit of the formula:

X-[RsI IR" (O) Si (Me) 0] wherein R is a divalent organic group, t is 0 or 1, R is methyl or ethyl, taken individually, and a five to six member heterocyclic ring when two R groups are taken together with N of the above formula and X is an inorganic anion and, when taken individually, is preferably iodine, bromine, aryl sulfonate having 6 to 18 carbon atoms, but can be nitrate, nitrite or borate, when taken individually, sulfate, preferably, or sulfite when two X groups are taken together, or phosphate when three X groups are taken together.

Also disclosed are tertiary amino =bis(trimethylsiloxy) siloxanes of the formula MD M wherein M and x are as defined above and D is a tertiary amino difunctional siloxy unit of the formula:

wherein R, R and t are as defined above, which are used in preparing the above cationic siloxanes.

The above cationic siloxanes are useful as emulsifiers, e.g., for water-poly(dimethylsiloxane) oil systems, bacteriocides, antistatic agents, Wetting agents and mold release agents.

This invention relates to novel organosilicon compounds, and, more particularly, to novel low molecular weight siloxanes containing quaternary nitrogen-containing groups or tertiary amine organo groups bonded to carbon.

High molecular weight siloxanes containing quaternary ammonium groups are disclosed in U.S. Pat. No. 3,278,- 465. Such materials have been found to be useful in the manufacture of certain types of polyurethane foams, e.g., those produced from polyether polyols, by the so-called one-shot technique disclosed in this patent. However, in the production of other types of polyurethane foams by the so-called one-shot technique the high molecular weight siloxanes of this patent either fail to perform adequately or fail completely. For example, in manufacturing polyester polyurethane foams by the one-Shot method using the high molecular weight siloxanes of this patent as stabilizers the foam collapses or is of very poor quality. Quaternary ammonium salts of siloxanes are also disclosed in U.S. Pat. No. 3,402,191 and British Pat. No. 1,164,581.

It has been found, according to the present invention, that a certain class of novel cationic siloxanes containing quaternary nitrogen as defined herein possess unique properties which render them far superior to the heretofore known siloxanes of a similar nature in such uses as the production of highly effective fire-fighting foams which 3',658867 Patented Apr. 25, 1972 ICE mula:

MD' M (a) wherein M is the trimethylsiloxy unit, Me SiO x is an integer of 1 to 3, preferably 1, and D is a cationic difunctional siloxy unit of the formula:

x-[R l lRP (0) .si (Me) 0] (1) wherein R is a divalent organic group free of aliphatic unsaturation and having 2 to 18 carbon atoms, selected from the class consisting of divalent hydrocarbon groups, hydroxy-substituted divalent hydrocarbon groups, and groups of the formula: R"OR"- wherein R is selected from the class consisting of divalent hydrocarbon groups and hydroxy-substituted divalent hydrocarbon groups as defined above; R is bonded to N of the formula and is selected from the class consisting of methyl and ethyl when taken individually and, when two R groups are taken together with the N atom of the above formula, a divalent group having a five to six member heterocyclic ring comprising carbon, nitrogen and hydrogen bonded through said N atom to the R group and the remaining R group; X is an anion selected from the class consisting of chlorine, iodine, bromine, aryl sulfonate having 6 to 18 carbon atoms, nitrate, nitrite and 'borate anions, when taken individually; sulfate and sulfite anions when two X groups are taken together; and phosphate anion when three X groups are taken together; and t is an integer of 0 to 1. Preferably X is selected from the class consisting of iodine, bromine and aryl sulfonate having 6 to 18 carbon atoms, when taken individually, and sulfate when two X groups are taken together. More preferably, X is selected from the class consisting of iodine and bromine and most preferably is iodine. The cationic bis(trimethylsiloxy) silanes, i.e., where x in the above Formulas (a) and (1) is 1, are preferred.

Typical divalent groups represented by R in the above formulas include, ethylene, 1,3-propylene, 1,2-propylene, 1,4-butylene, 1,3 butylene, 1,5-pentylene, 1,4-pentylene and 1,6-hexylene, cycloalkylene including cyclohexylene, cyclopentylene and the like, arylene including phenylene, benzylidene, tolylene, Xylylene, naphthylene,

5,6-dimethyl-1,3-phenylene, 2,4-dimethy1 1,3-phenylene, anthrylene and the like; hydroxyl-snbstituted divalent hydrocarbon groups such as groups including hydroxyethylene, 2-hydroxy-l,3-propylene, 3-hydroXy-1,2-propylene, 2- hydroxy-n-butylene, 2-hydroxy-1,3-butylene, and the like, hydroxycycloalkylene including 2-hydroxy-l,3-cyclopentylene, Z-hydroxy-l,4-cyclohexylene and the like, hydroxyarylene groups including 2-hydroXy-1,4-phenylene, 3-hydroxy-1,4tolylene, 2-hydroxy-l,4-Xylene, 3-hydroxy-1,2- naphthylene, 6-hydroxy-1,2-anthrylene and the like; and divalent groups of the formula R"OR"- wherein R" is selected from the class consisting of divalent hydrocarbon groups such as those listed above and hydroxylsubstituted divalent hydrocarbon groups such as those listed above, including by way of example, 1,3-propyleneoxy-1,3-propylene, propyleneoxy-1,2-butylene, 1,3-propyleneoxy-2-hydroxy-1, 3-propylene, 1,2 propyleneoxy-S-hydroxy-1,4-butylene and the like.

1,3-propyleneoxy-1,4 butylene, 1,3- t

In Formula 1 typical groups having a divalent heterocyclic ring represented by two R groups taken together with N of the formula include morpholinium,

piperidinium,

CH2CH2 1it oH.

01120112 pyrrolium, piperazinium, pyridinium and the like.

The organosilicon compounds containing tertiary amino groups bonded to carbon disclosed herein are the tertiary amino bis(trihydrocarbylsiloxy) siloxanes of the formula:

MD M (b) wherein M and x are as defined above and D is a tertiary amino difunctional siloxy unit of the formula:

R NR(0) Si(Me)O (2) wherein R and t are as defined above and R is bonded to N of Formula 2 and is selected from the class consisting of methyl and ethyl, when taken individually, and, when two R groups are taken together with the N atom of Formula 2, a five or six member monovalent'heterocyclic ring comprising carbon, nitrogen and hydrogen bonded through said N atom to said R group.

Typical R and R groups for Formula 2 are as listed above for Formula 1. Illustrative monovalent groups having a five or six member heterocyclic ring include morpholinyl,

onion. N 0

0112011 piperidyl,

/CHzCHz /CH2 onzong pyrrolyl, piperazinyl, pyridyl and the like. The cationic bis(trimethylsiloxy) silanes, i.e., where x in Formulas b and 2 above is l, are preferred.

The cationic silicones of Formula 1 wherein X is iodine or bromine are prepared by reacting a methyl or ethyl iodide or bromide with a tertiary amino bis(trimethylsiloxy) siloxane in accordance with the equation:

1) master/a reeable)( maha. RX

{Me Si0 ]1[[0Si(Me) o) .R it RQX-Jx wherein R, R, X and t are as previously defined.

Suitable halides are methyl bromide, ethyl bromide, methyl iodide, ethyl iodide and the like.

No special catalysts are needed for Reaction 1. It is advantageous, however, to employ a polar solvent which dissolves both reactants and the product. Suitable solvents are the aliphatic alcohols such as n-propanol and the aliphatic ethers such as tetrahydrofuran. The amount of solvent used is not narrowly critical and can range from ahount 40 to about 100% of the total Weight of both reactants.

Atmospheric or superatmospheric pressures can be used for Reaction 1 as may be convenient for the operator. It it convenient to mix both reactants and the solvent and then maintain the resulting mixture at the reaction temperature until the reaction has been completed. However, any convenient order of mixing can be used. When a low boiling halide, such as methyl bromide, is used as a reactant, it is convenient to first mix the solvent and the siloxane and heat the resulting mixture to the reaction temperature. Then, the halide can be added in gaseous or liquid form and the reaction completed at the reaction temperature.

Reaction temperatures for Reaction 1 are not narrowly critical and can be in the range of about 50 C. or less to C. or more. Lower temperatures usually are impractical and high temperatures usually are unnecessary.

The cationic silicone product is convenenitly separated from the reaction mixture by rotary evaporation under sub-atmospheric pressure. Any other suitable separation technique may be used. Further purification can be carried out on the separated product washing the solid product with a liquid aliphatic hydrocarbon such as pentane or hexane. Other purification techniques can be used.

Cationic silicones of Formula 1 where the X groups, taken individually or two or three together, are nitrate, borate, nitrite, sulfate, sulfonate, sulfite or phosphate anions, which for convenience are called the non-halide anions, are produced by reacting the product of Reaction 1, i.e., a cationic silicone of Formula 1 in which X is a halide, with a soluble salt containing the non-halide anion and which forms an insoluble halide. Suitable soluble salts include silver nitrate, silver borate, silver nitrite, silver sulfate, silver aryl sulfonate, and silver sulfite. By double decomposition, the soluble salt exchanges anions with the cationic silicone halide forming the desired cationic silicone non-halide and an insoluble halide which precipitates out. For example, silver sulfate is reacted with a cationic silicone halide of the formula:

{MmSiOi/flflOSKMe) onmfi (Me) ornonz) 2011- to form the corresponding sulfate of the formula:

[[Megslol alzlosl (Me) (U HghSHMQCHzCHz) 2011950: and insoluble silver bromide which is recovered as a precipitate.

The tertiary amine bis(trimethylsiloxy) siloxane intermediates used as starting materials in Reaction 1 for preparing cationic silioones having the Formula 1 wherein =0 are prepared by the addition reaction of the corresponding hydrosiloxane:

masio'iilhtosnMo h and an alkenyl group-containing tertiary organic amine in accordance with the equation:

wherein R, R and x are as defined above and wherein R'" is a divalent organic group free of aliphatic unsaturation, having 1 to 16 carbon atoms and selected from the class consisting of divalent hydrocarbon groups, hydroxy-substituted divalent hydrocarbon groups, groups of the formula OR"- wherein R" is a divalent hydrocarbon group or hydroxy-substituted hydrocarbon group and is bonded to the N atom and wherein the oxygen is bonded to the CH ==CH- group, and -R"OR" wherein R" is as defined above. It will be noted that the --R- group comprises the group C H.,R- which is formed when ESlH reacts with CH =CHR" in Reaction 2. the hydrosiloxanes are readily available materials and can be prepared by standard procedures. Suitable hydrosiloxanes include heptomethyltrisiloxane, ctamethyltetrasiloxane, and nonamethylpentasiloxane. The alkenyl group-containing tertiary amines are also available or can be prepared by standard procedures. Illustrative amines are N-allyl-N,N-diethylamine, N-allylpiperidine, N-allylmorpholine, N methallylmorpholine, N allyl-N-methylaniline, N-(Z-allyloxy)propylmorpholine, those listed in Table 1 below and the monoallyl or monovinyl others of the following amines; N,N-diethyl ethanolamine, N,N-dimethyl ethanolamine, N,N-diisopropyl ethanolamine, N,N- dimethylpropanolamine, N,N-dihexylethanolamine, N,N- dilauryl propanolamine.

In general, the reaction illustrated by Equation 2 can be conducted employing, preferably, from 5 to 30 parts,

per million parts by weight of the reactants, of platinum, e.g., in the form of chloroplatinic acid dissolved, if desired, in a solvent such as, tetrahydrofuran, ethanol, butanol or a mixture of ethanol and ethylene glycol dimethyl ether, or in the form of finely divided elemental platinum supported on a material such as gamma alumina or charcoal. The addition reaction is conducted at a temperature of from 60 C. to 200 C., or preferbly at a temperature from about 100 C. to about 140 C. It is preferred to conduct the reaction in the presence of a liquid organic compound or solvent in which the reactants are mutually soluble. Solvents are especially preferred in Reaction 2 so as to provide greater compatibility between the reactants. Suitable solvents include aromatic hydrocarbons (e.g., toluene and xylene) and ethers (e.g., ethylene glycol diethyl ether, diethylene glycol dimethyl ether, diisopropyl ether, and dipropyl ether). Such solvents can be employed in an amount from 10 parts to 1000 parts by weight per 100 parts by weight of the reactants.

The relative amounts of the alkenyl amine and the hydrosiloxane employed are not narrowly critical. Stoichiometric amounts of the reactants up to a slight excess of alkenyl amine, e.g., up to 5% excess, can be used and such slight excess of alkenyl amine can be advantageous from the standpoint of more effective and more complete reaction of silanic hydrogen.

The order in which the alkenyl amine, the hydrosiloxane and the platinum catalyst are mixed in forming a reaction mixture for use in producing the siloxanes of this invention is not critical to obtaining the desired product. The catalyst can be added separately to the alkenyl amine or to the siloxane or can be added to a mixture of these materials. It is preferable to add the catalyst to the hydrosiloxane and then add the alkenyl amine in increments since this technique aids in controlling the reactions, which are often exothermic. Additional catalyst can be added during the course of the reaction in the event the rate of reaction decreases (e.g., due to catalyst poisoning).

The reaction is usually completed within about 1 to about 6 hours and completeness can be readily detected by withdrawing an aliquot sample and testing with a solution of silver nitrate in an ethanol-water solvent.

The tertiary amino bis (trimethylsiloxy) siloxane intermediates used as starting materials in Reaction 1 for preparing cationic silicones having the Formula 1 wherein t=1 are prepared by the reaction of a hydrosiloxane as defined above with an organic amino alcohol in accordance with the equation:

wherein R, R and x are as defined above.

Suitable amino alcohols include N,N-dimethylaminoethanol, N,Ndiethylaminoethanol, 1-(N,N-dimethylamino propanol, N- [2- (2-hydroxyethoxy) ethyl] morpholine, the amino alcohols listed in Table 2 below, N,N-diisopropylethanolamine, N,N-dimethylpropanolamine, N,N- dihexylethanolamine, N,N-dilaurylpropanolamine and the like.

Reaction 3 is carried out in the presence of stannous octoate catalyst which preferably is used in amounts of about 0.5 to about 2.0% based on the total weight of the reactants, although higher or lower amounts can be used, such as in the range of about 0.1 to about 5 wt. percent on the same basis. The reaction conditions specified above for the reaction of Equation 2 can also be applied here.

The intermediates produced by the reaction of Equations 2 and 3 can be isolated in any convenient way such as by fractional distillation under vacuum or, especially if the intermediate has a high boiling point, rotary evaporation under reduced pressure.

The cationic silicones disclosed and claimed herein are highly useful as foam stabilizers in such applications as the production of highly eflicient fire-fighting foams as disclosed in the concurrently filed US. application No. 887,341, entitled Method of Extinguishing Fires and Compositions Therefor Containing Cationic Silicone Surfactants by Meyer Rosen and Bela Prokai, high quality polyester polyurethane foams by the one-shot technique as disclosed in the concurrently filed US. application No. 887,429, entitled Cationic Silicone Surfactants for Flexible Polyester Urethane Foams by Bernard Kanner and Bela Prokai, and high quality polyurethane foams by the mechanical frothing technique as disclosed in the concurrently filed US application No. 887,305, entitled Curable Polyurethane Froth and Compositions for Producing Same by Bela Prokai and Bernard Kanner. The tertiary amino bis(trimethylsiloxy) siloxanes and the cationic silicones disclosed and claimed herein are also useful as emulsifiers for water-poly(dimethylsiloxane) systems, bacteriocidcs, antistatic agents, wetting agents and mold release agents.

The following examples are presented wherein all parts and percentages are by weight and all temperatures are on the Centigrade scale. Boiling points, evaporation conditions and distillation conditions are given in degrees centigrade at a pressure given in millimeters of mercury, e.g., 63/1 mm. which means 63 C. at 1 mm. Hg pressure. Washing conditions are expressed in the number of washes and the amount of washing liquid for each wash, e.g., 6X 100 ml. which means Washed six times using 100 ml. washing liquid each time. Also, the designation -N (CH CH 0 represents the morpholinyl group onzonz CHzCfiz the designation --NC H represents the piperidinyl group CHzCHg N CH2 oHtofiz the designation 1 I oH2oH2)2o represents the morpholinium group CHzCH l l o CHzCfig and the designation represents the piperidinium group CHzCfia EXAMPLE 1 Preparation of MesSiO zMe'Si CH2) sfi'Mea] I- A. To a 500 ml. flask equipped with thermometer, stirrer, dropping funnel and nitrogen atmosphere were added heptamethyltrisiloxane (132.2 g., 0.594 mole) and 100 ml. of toluene. The reaction mixture was heated to and then 10 parts per million platinum was added as chloroplatinic acid. To this mixture, N-allyl-N,N-dimethylamine (50.5 g., 0.594 mole) was added dropwise while maintaining the reaction mixture at 80-90. After the completion of addition, the reaction mixture was kept at 8090 for 1 hr. The mixture was then cooled and neutralized by NaHCO filtered and fractionally distilled. There was obtained 162.0 g. (88.7%) of the intermediate, (Me SiO) MeSi(CH -NMe which had a boiling point of 63/1 mm.

Analysis.-Calcd. for C H NO Si (percent): C, 46.9; H, 10.7; N, 4.6; Si, 27.4. Found (percent): C, 46.3; H, 10.2; N, 3.8; Si, 26.4.

B. 60.0 g. (0.195 mole) of this intermediate was dissolved in 50 ml. of tetrahydrofuran. To this mixture, 55.4 g. )(0.390 mole) of methyl iodide were added slowly g.) (0.390 mole) of methyl iodide were added slowly action mixture was stirred at 25 C. for 1 hour. Removal of solvent by rotary evaporation afforded a white solid which was mixed with hexane (100 ml.) and filtered to give 42.8 g. (81.7%) of the intermediate.

Analysis.-Calcd. for C H INO Si (percent): C, 34.7; H, 8.0; I, 28.2; N, 3.1; Si, 18.8. Found (percent): C, 34.9; H, 8.2; I, 27.4; N, 3.0; Si, 18.9.

The product when dissolved in tap Water at a concentration of 1 wt. percent and whipped, produced a firefighting foam that formed a long-lasting, spreading, vaporsecuring film on gasoline. When mixed with a polyestercontaining, blowing agent-containing, polyurethane-forming composition on the basis of 1 wt. pt. per hundred wt. pts. of polyester, a high quality, breathable foam was obtained.

EXAMPLE 2 Preparat on of {(Me SiO)zlVIeSKOHmNMeflCl- The amino-modified siloxane was prepared as described ,in Example 1, Section A. 102.5 g. (0.33 mole) of this compound were dissolved in 200 ml. of tetrahydrofuran in a flask equipped with stirrer, Dry Ice condenser, thermometer and gas dispersion tube. The solution was heated to 60. Then gaseous methyl chloride (40 g., 0.8 mole) was passed into it over a period of 2 hours. After the completion of addition, the reaction mixture was maintained at 5060 for 2 more hours. Rotary evaporation of all matter volatile at 30/l mm. afforded a white waxy solid which was purified by Washing with hexane (6x100 ml.) which resulted in a microcrystalline white powder product in 60% yield.

Analysis.-Calcd. for C H ClNO Si (percent): C, 43.6; H, 10.1; C1, 9.9; N, 3.9; Si, 23.5. Found (percent): C, 41.1; H, 10.0; C1, 8.8; N, 3.5; Si, 22.1.

The product when dissolved in tap water at a concentration of 1 wt. percent, produced a fire-fighting foam that provided a long-lasting, spreading, vapor-securing film on gasoline.

EXAMPLE 3 3 Preparation of [(Me Si O MeSi (C H2) NMeflB r- The amino-modified siloxane was prepared as described in Example 1, Section A. 102.5 g. (0.33 mole) of this compound were dissolved in 150 ml. dry tetrahydrofuran. The solution was charged to a three-necked 500 ml. flask equipped with a Dry Ice condenser, heating mantle, stirrer and thermometer. Methyl bromide was slowly bubbled in (47.5 g., 0.5 mole). This caused an exotherm to 45. After the completion of addition, the mixture was heated to reflux (66) and kept at that temperature for four hours. The mixture was then cooled and solvent was removed by rotary evaporation. The white solid residue was mixed with 200 ml. of hexane and filtered to give 86.0 g. (65%) of the product.

Analysis.--Calcd. for C H BrNO Si (percent): C, 38.7; H, 8.9; Br, 19.8; N, 3.4; Si, 20.9. Found (percent): Br, 18.9; Si, 20.1.

The product when dissolved in tap water at a concentration of 1 wt. percent, produced a fire-fighting foam that provided a long-lasting, spreading, vapor-securing film on gasoline.

EXAMPLE 4 Preparation of [(Me Si O ZMeSi H2) 3 (Me) NC H ]I (A) N-allylpiperidine (62.6 g., 0.5 mole) was added to heptamethyltrisiloxane (111.2 g., 0.5 mole) almost at once. The apparatus comprised a three-necked flask, fitted with thermometer, condenser and stirrer. The reaction was carried out under nitrogen attmosphere. 200 ml. of dry xylene were used as solvent. To this mixture 15 parts per million of platinum as chloroplatinic acid were added and then refluxed at 138 until all of the SiH had been consumed as evidenced by the silver nitrate test. After the completion 01: the reaction (1 hour), the mixture was cooled and neutralized by NaHCO filtered and all matter volatile at 30/l mm. was removed by rotary evaporation. The residue was fractionally distilled at 98/0.2 mm. to give the desired intermediate,

(148.2 g.) in 85.4% yield.

Analysis.Calcd. for C H NO Si (percent): C, 51.8; H, 10.7; N, 4.0; Si, 24.2. Found (percent): C, 49.4; H, 10.0; N, 3.9; Si, 24.3.

(B) 69.53 g. (0.2 mole) of the above intermediate were reacted with methyl iodide (33.06 g., 0.232 mole) in a 500 ml. round bottom flask without solvent. The mixing of the two reagents was carried out with vigorous stirring. There was an exothermal reaction noted and soon after the addition was complete, a white precipitate formation was apparent. After about 10 minutes the reaction mixture solidified. To this mixture, 250 ml. of pentane were added, mixed well and filtered. The precipitate was washed with 2X 70 ml. of pentane to give 85.0 g., 87% of the product.

Analysis.-Calcd. 01 C16H40INO2SI3 (percent): C, 39.3; H, 8.2; I, 25.9; N, 2.9; Si, 17.2. Found (percent): C, 40.1; H, 8.3; I, 22.5; N, 3.0; Si, 18.0.

The product when dissolved in tap water at a concentration of 1 wt. percent, produced a fire-fighting foam that provided a long-lasting, spreading, vapor-securing film on gasoline.

When mixed with a polyester-containing, polyurethaneforming composition, on the basis of 1 wt. pt. per hundred wt. pts. of polyester, there was produced a high quality foam.

EXAMPLE 5 4. Preparation of [(Me Si O) zMeSK CH (Me) N(CH2C H2) 2011- (A) N-allylmorpholine (100.0 g., 0.787 mole) was added to heptamethyltrisiloxane (175.0 g., 0.787 mole) almost at once. The apparatus comprised a three-necked flask, fitted with thermometer, condenser and stirrer. The reaction was carried out under nitrogen atmosphere. Toluene (200 ml.) was used as solvent. To this mixture 10 parts per million of platinum were added as chloroplatinic acid. The reaction mixture was then refluxed (110) for 3 hours. After the completion of the reaction, the mixture was cooled, neutralized by NaHCO and filtered. Removal of the volatiles at 30/1 mm. by rotary evaporation afforded a straw colored residue,

(Me SiO MeSi(CH N(CH CH 0 261.7 g. in 95.2% yield.

Analysis.--Calcd. for C H NO Si (percent), C, 48.1; H, 10.0; N, 4.0; Si, 24.1. Found (percent): C, 47.6; H, 10.3; N, 3.8; Si, 22.2.

(B) 100 g. (0.286 mole) of the above prepared siloxane were dissolved in 100 ml. tetrahydrofuran. To this mixture 60.9 g. (0.429 mole) of methyl iodide were added and the mixture was stirred at 25 for 16 hours. Removal of the solvent by rotary evaporation atforded a white solid which was washed with 200 ml. of pentane and filtered. There was obtained 136.9 g. (97.8%) of the product.

Analysis.-Calcd. for C H IO Si (percent); C, 36.6; H, 7.71; I, 25.8; N, 2.9; Si, 17.1. Found (percent): C, 36.7; H, 8.8; I, 25.4; N, 2.8; Si, 17.0.

When mixed with a polyurethane forming composition and mechanically frothed with air, a stable, curable froth having a density of 16 pounds per cubic foot or less was obtained.

9 EXAMPLE 6 Preparation of [(Me SiO)gMeSi(CH2)a(Me)2NC H ]I- (A) N-allyl-N-methylaniline (50.0 g., 0.339 mole) was added to heptamethyltrisiloxane (75.5 g., 0.339 mole) dissolved in 100 ml. of xylene. To this mixture 15 parts per million of platinum were added as chloroplatinic acid. The reaction mixture was heated at 120135 for 1 hour. After this time all of the SiH had' been consumed as evidenced by the silver nitrate test. After cooling, the mixture was neutralized by NaHCO and filtered. Removal of solvent by rotary evaporation at 30/ 1 mm. afforded the intermediate (Me SiO MeSi (CH 3 (Me) NC H in 89% yield (111.0 g.).

Analysis.Calcd. for C 'H NO Si (percent): C, 55.2; H, 9.5; N, 3.8; Si, 22.8. Found (percent): C, 58.4; H, 9.5; N, 4.2; Si, 20.3.

(B) 20.0 g. (0.054 mole) of the above prepared silox- 'ane were reacted with methyl iodide (10.5 g., 0.073 mole) in 30 ml. of benzene for 25 hours at 25. After removal of the solvent -by rotary evaporation at 30/1 mm., the resultant solid was mixed with pentane (150 ml.) and filtered. There was obtained 25.0 g. (90.25%) of the product as a white crystalline solid.

Analysis.Calcd. for C H INO Si (percent): C, 42.2; H, 7.5; I, 24.8; N, 2.7; Si, 16.5. Found (percent): C, 44.7; H, 7.2; I, 22.7; N, 2.7; Si, 15.1.

When mixed with a polyester-containing, polyurethaneforming composition, on the basis of 1 wt. pt. per hundred wt. pts. of polyester, there was produced a high quality foam.

EXAMPLE 7 Preparation of IMe SiO) zMeSi (CH2) aOCHMeCH2(Me) N (C H2CH2) 2011- (A) Heptamethyltrisiloxane (1112 g., 0.5 mole) and 150 ml. of toluene were placed in a 500 ml. flask equipped with condenser, stirrer, thermometer and dropping funnel. The solution was heated to 100 and 20 parts per million platinum were added as chloroplatinic acid. Tothis mixture, N-(2-allyloxy) propylmorpholine (93.5 g., 0.5 mole) was added slowly over a period of 15 minutes, and then the mixture was maintained at reflux temperature (110) for 2 hours. After cooling, the mixture was neutralized by NaHCO and filtered. The intermediate,

(Me SiO MeSi (CH OCHMeCH N (CH CH 0' was isolated by fractional distillation at 114/ 0.14 mm. The yield was 163.8 g. (80%).

Analysis.Calcd. for C H NO Si (percent): C, 50.1; H, 10.1; N, 3.4; Si, 20.6. Found (percent): C, 47.4; H, 9.7; N, 3.3; Si, 20.5.

(B) This intermediate (80.0 g., 0.195 mole) and methyl iodide (55.5 g., 0.39 mole) and 100 g. of tetrahydrofuran were mixed in a 500 ml. flask equipped with stirrer and Amine oH2=onorrzoontomon ofiifilo'fitiiiiiitolIIIIIIIIIIIII condenser. The reaction mixture was maintained at reflux for 3 hours. After this time the reaction mixture was cooled and the solvent was removed by rotary evaporation at 30/1 mm. to give 102 g. (94.7%) of the product.

Analysis.-Calcd. for C H INO Si (percent): C,

39.3; H, 8.0; I, 23.1; N, 2.6; Si, 15.3. Found (percent): C, 38.2; H, 7.6; I, 23.1; N, 2.5; Si, 15.3.

The product when dissolved in tap water at a concentration of 1 wt. percent, produced a fire-fighting foam that provided a long-lasting, spreading, vapor-securing film on gasoline.

When mixed with a polyester-containing, polyurethaneforming composition, on the basis of 1 wt. pt. per hundred wt. pts. of polyester, there was produced a high quality foam.

When mixed with a polyurethane-forming composition and mechanically frothed with air, a stable, curable froth having a density of 16 pounds per cubic foot or less was obtained.

EXAMPLE 8 (Preparation of [(Me SiO) zMeSiO (C Hz) :0 (CH2) 2(Me) N (CH2CH2) zOII (A) N [2 (2 hydroxyethoxy)ethylJmorpholine (43.7 g., 0.25 mole) and heptamethyltrisiloxane (55.5 g., 0.25 mole) were reacted together in the presence of 0.2 wt. percent stannous octoate catalyst. The apparatus comprised a three-necked flask, fitted with thermometer, condenser and stirrer. The reaction was carried out under nitrogen atmosphere. The reaction mixture was heated at 110-120 with constant stirring for 4 hours. Evolution of hydrogen was noted soon after heating started. The completion of the reaction was evidenced by the negative silver nitrate test for SiH. The intermediate,

(Me SiO) MeSiO(CH O (CH N (CH CH 0 was obtained in yield.

Analysis.Calcd. for C H NO Si (percent): C, 45.5; H, 9.4; N, 3.5; Si, 21.3. Found (percent): C, 42.0; H, 9.2; N, 2.9; Si, 27.6.

(B) This intermediate (36.5 g., 0.092 mole) and methyl iodide (19.6 g., 0.138 mole) were mixed together in the presence of 100 ml. of tetrahydrofuran. The reaction mixture was allowed to stir for 16 hrs. at 25. Removal of solvent by rotary evaporation afforded a slightly colored solid product (40.5 g.) in 82.5% yield.

Analysis.-Calcd. for C H INO Si (percent): C, 35.7; H, 7.4; I, 23.6; N, 2.6; Si, 15.6. Found (percent): C, 33.3; H, 7.3; I, 19.7; N, 2.2; Si, 21.7.

The product when dissolved in tap water at a concentration of 1 wt. percent, produced a fire-fighting foam that provided a long-lasting, spreading, vapor-securing film on gasoline.

When mixed with a polyurethane-forming composition and mechanically frothed with air, a stable, curable froth having a density of 16 pounds per cubic foot or less was obtained.

Using the procedure of Example 1, Section A, heptamethylsiloxane is reacted with the allylic amines listed in Table 1 to produce the tertiary aminohydrocarbyl bis- (trihydrocarbylsiloxy) silanes also listed in Table 1.

TABLE I Product Using the procedure of Example 8, Section A, heptamethylsiloxane was reacted with the hydroxyamines listed in Table 2 to produce the tertiary aminohydrocarbylglxy bis(trihydrocarbylsiloxy) silanes also listed in Ta e 2.

Using the procedure of Section B of Examples 1 or 4 5. Compound as claimed in claim 2, having the formula: through 8 or the procedures of Examples 2 or 3, corresponding to the alkyl halide used, the siloxanes listed in K s o)zMeSi(GH2)aNMe ]Gl" Table 3 were reacted with the alkyl halides listed in Table Compound as claimed in Claim 2, having the formulm 3 to produce the products listed in Table 3. [M9381O)2MeSi(0H2)3Me3]Br TABLE 3 Siloxane Product (MegSiO)zMeSiKCHzhNMe; EtI [(MegSiO)2MeSi(CH2)sl IMezEt]I 7 Mel (Masio)nvlesnoHnnv'EtiMdr b tMeisiomvtesiwHmNnn EtI [(Masio)iMesncHnsl tEtsllb MeBr MeSiO)mesnonnivntiliielnr- (Mezslo)zllllesi(CH2 2CHM9N(CH2CH2)2O Mei [(Meisio)ill/lest(0H2)20HM (Me)1i(oHicHi)io]I n (MEaSiOhMeSitCH2)3N(CHzOHz)zO MeBr [(Meisi0 iMesuom)3(Me)N oHioH2 i0]Br EtI [(MmSiOhll/leSKCHz)s(Et)lC5Hm]I- Mel {(MlnSiOhMeSiOCHMeCHfl IMe II a nu Mesioni/iesioonlsreomimennr- (MsslonMeslo(oHmNMe MeI (Meisionlvlesio anachroni- Mel: MasionMesm unwind re]:-

an tneisionwlesio ennifintin- (MesSiOhMeSi(CH2)3NC5H10 (Me:SiO)2MeSiO CHMeCHzNMBz (MeaSiOhMeSiO (CH2)2NEtz (Me SiO)zMesiOcHMeCHzNEtg MeI {(Me SiOhMeSiOCHMeOHd QTEtQMeII- (MesSiO)2MeSiOCH(Me)CHzN(CH CH2)2O MeI I(MesSiO)zMeSiOCH(Me)CHz(Me)I l(CHzOH2)2O]I" (MfisSiOhMeSl(CH2)3OCH2CH(OH)CH:N(CH2CH2)2O MeI [(MelSiO)zMeSi(CH2):;OCHQCIFKOH)CHz(Me)(CH2CH2)2O]- a The product when dissolved in tap water at a concentration of 1 wt. percent, produced a fire-fighting foam that provided a long-lasting, spreading, vapor-securing film on gasoline.

b When mixed with a polyester-containing, polyurethane-forming composition, on the basis of 1 wt. pt. per hundred wt. pts. of polyester, there was produced a high quality foam.

0 When mixed with a polyurethane-forming composition and mechanically irothed with air, a stable, curable froth having a density of 16 pounds per cubic foot or less was obtained.

What is claimed is: 7. Compound as claimed in claim 2, having the formula: 1. Cationic bis(trimethylsiloxy) siloxane having the formula MD 'M wherein M is a trimethylsiloXy unit, [(MciSlmiMesl(CHz)a al Me SiO x is an integer of 1 to 3 and D is a cationic 8. Tertiary amino bis(trimethylsiloxy) siloxanes havdifunctional unit having the formula: ing the formula MD M wherein M is the trimethylsiloxy 40 unit Me SiO x is an integer of 1 to 3 and D is a ter- X[R NR (0),Si(tvIe)0] tiary amino difunctional siloxy unit of the formula:

wherein R is a divalent organic group, free of aliphatic RZNRMOMSKMQO unsaturation and having 2 to 18 carbon atoms, selected wherein R is a divalent organic group free of aliphatic from the class consisting of divalent hydrocarbon groups unsaturation and having 2 to 18 carbon atoms, selected and hydroxy-substituted divalent hydrocarbon groups; R from the class consisting of divalent hydrocarbon groups is selected from the class consisting of methyl and ethyl; and hydroXy-substituted divalent hydrocarbon groups; R

X is an anion selected from the class consisting of chlois selected from the class consisting of methyl and ethyl rine, iodine, bromine, aryl sulfonate having 6 to 18 carand t is an integer of 0 to 1 with the proviso that when t bon atoms, nitrate, nitrite and borate anions When taken is 1, R can also be groups of the formula: R"OR" individually, sulfate and sulfite anions when two X- wherein R" is selected from the class consisting of digroups are taken together and phosphate anion when three valent hydrocarbon groups and hydroXy-substituted di- X groups are taken together; and t is an integer of 0 to valent hydrocarbon groups as defined above. I With the proviso that when t is l, R can also be groups 9. Compounds as claimed in claim 8 wherein R is seof the formula R"OR wherein R" is selected from lected from the class consisting of alkylene and hydroxythe class consisting of divalent hydrocarbon groups and substituted alkylene when t is (l and groups of the forhydroXy-substituted divalent hydrocarbon groups as demula: R"OR" wherein R" is selected from the class fined above. consisting of alkylene, and hydroxy-substituted alkylene as 2. Cationic bis(trimethylsiloxy) siloxane as claimed defined above whentis 1. in claim 1, wherein X is an anion selected from the class 10. Compound as claimed in claim 9 having the consisting of chlorine, iodine, bromine and aryl sulfonate, formula: having 6 to 12 carbon atoms, anions when taken individ- (Me SiO) MeSi(CI-I NMe ually and sulfate anion when two X* are taken together.

3. Compounds as claimed in claim 1, wherein R is se- R f r nces C t d lected from the class consisting of alkylene and hydroxy- UNITED STATES PATENTS substituted alkylene when t ls 0 and also groups of the 3,402,191 9/1968 Momhouse formula: -R"OR" wherein R" is selected from the class consisting of alkylene, and hydroxy-substituted alkyl- TOBIAS LEVOW Primary Examiner ene as defined above when t is 1.

4. Compound as claimed in claim 2, having the formula: BELLAMY Asslstant Exammel' US. Cl. X.R.

ile slopinesl onpiliiile r 260-247 .7 A, 293 R, 247 

